Add confirmation step to Clear button in channel GUI (#66)

Author: Eldrinn-Elantey

src/main/java/com/gtnewhorizon/structurelib/gui/GuiScreenConfigureChannels.java

@@ -64,6 +64,9 @@ public class GuiScreenConfigureChannels extends GuiContainer implements IGuiScre
     private GuiTextField key, value;
     protected int guiTop, guiLeft;
     private List<String> info;
+    private boolean wipePending = false;
+    private long wipePendingTime = 0;
+    private static final long WIPE_CONFIRM_TIMEOUT_MS = 3000;
 
     public GuiScreenConfigureChannels(Container container, ItemStack trigger) {
         super(container);
@@ -346,9 +349,17 @@ protected void actionPerformed(GuiButton btn) {
                 ChannelDataAccessor.unsetChannelData(trigger, key.getText());
                 break;
             case WIPE_BTN:
-                ChannelDataAccessor.wipeChannelData(trigger);
-                key.setText("");
-                this.value.setText("");
+                if (!wipePending) {
+                    wipePending = true;
+                    wipePendingTime = System.currentTimeMillis();
+                    btn.displayString = I18n.format(I18N_PREFIX + "wipe.confirm");
+                } else {
+                    wipePending = false;
+                    btn.displayString = I18n.format(I18N_PREFIX + "wipe");
+                    ChannelDataAccessor.wipeChannelData(trigger);
+                    key.setText("");
+                    this.value.setText("");
+                }
                 break;
         }
 
@@ -369,6 +380,10 @@ public void updateScreen() {
         super.updateScreen();
         key.updateCursorCounter();
         value.updateCursorCounter();
+        if (wipePending && System.currentTimeMillis() - wipePendingTime > WIPE_CONFIRM_TIMEOUT_MS) {
+            wipePending = false;
+            getButtonList().get(WIPE_BTN).displayString = I18n.format(I18N_PREFIX + "wipe");
+        }
     }
 
     @Override

src/main/resources/assets/structurelib/lang/en_US.lang

@@ -37,6 +37,7 @@ item.structurelib.constructableTrigger.gui.add=Add
 item.structurelib.constructableTrigger.gui.set=Update
 item.structurelib.constructableTrigger.gui.unset=Remove
 item.structurelib.constructableTrigger.gui.wipe=§4Clear
+item.structurelib.constructableTrigger.gui.wipe.confirm=§4Sure?
 item.structurelib.constructableTrigger.gui.channels.from=§rMod: §9§o%s
 item.structurelib.constructableTrigger.gui.info=Many multiblocks support some degree of variation in their structure and a sub channel allows indication of which variant to use.\n All sub channels have a sequence of lowercase characters as key and a positive integer as value. Most known sub channels should be available as typeahead completions.\n You can also drag and drop items from NEI to set the corresponding sub channel value. These items all have a tooltip of "§oIndicates§r §ovalue§r §oX§r §ofor§r §osub§r §ochannel§r §oY§r".